CVE-2026-54058
Out-of-bounds read in Pillow when loading McIdas AREA images (fixed in 12.3.0).
Is CVE-2026-54058 being exploited?
Not confirmed. CVE-2026-54058 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.52% probability of exploitation in the next 30 days.
How severe is CVE-2026-54058?
CVE-2026-54058 is rated High with a CVSS score of 8.3. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-54058?
Yes. A fix has been recorded for CVE-2026-54058. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-54058 affect?
CVE-2026-54058 affects Pillow <= 12.2.0, Python apps using Pillow McIdas AREA codec, Image processing pipelines and web services. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-54058?
Upgrade Pillow to >=12.3.0 and validate/strip untrusted AREA images
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Crafted McIdas AREA images cause OOB reads via mmap path, disclosing adjacent process memory or crashing image-processing apps.
Patch when possible
- affected< 12.3.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.